Here are two maps of Boston. I might include some text here about this set of maps.
This interactive map shows the percentage of households countywide with children as a proportion of the total count of households in Suffolk county:
#Zonal Aggregation Map
##Map #1 shows the trees within 500 meters of schools across the city of Boston. It also notes the percentage of total trees within 500 meters of all school:
##Map #2 Boston Tree and Schools This map shows the count of schools per community area in Boston:
*demonstrates aggregating points to a polygon
This map shows accessibility based on a distance-decay function of the walking time to the nearest transit stop. It demonstrates the following skills: